In spots, the cave’s silvery, magnesioferrite glaze crinkles up like peeling paint. Elsewhere a thin layer of gypsum colors the walls a bright white, and mats of rock-eating bacteria excrete ...

He wormed toward the bottom of the 10-foot pit and dug his foot against what he thought was the cave wall. He lunged forward. Behind him, a rock crumbled. His left ankle suddenly throbbed.

The wall has multiple cracks, a cave, overhung areas and less-than vertical climbing ... Climbing shoes, harnesses, helmets, and belay devices Harnesses, helmets, rock shoes and belay devices are free ...

For 27-year-old Zhou Yuanpeng (pseudonym), a university researcher studying cave-dwelling fish, what began as a routine scientific expedition became a life-threatening ordeal which ultimately turned ...

He captured images of the cave’s inside walls and views of the Allegheny River ... The material is beginning to peel away from the rock face because of exposure to the elements.

In 1923, Dutch archaeologists made a stunning discovery at the base of a lush green river valley near Ubud in the southern ...